<template>
  <view class="normal-login-container">
    <view class="logo-content align-center justify-center flex">
      <image style="width: 100rpx;height: 100rpx;" :src="globalConfig.appInfo.logo" mode="widthFix">
      </image>
      <text class="title">Tong-Kang-Kang</text>
    </view>
    <view class="login-form-content">

      <uni-data-select placeholder="请选择公司"
                       v-model="loginForm.tenantId"
                       :localdata="tenantList"
                       @change="change"
                       v-if="isShow"
      ></uni-data-select>
      <view class="input-item flex align-center">
        <view class="iconfont icon-user icon"></view>
        <input v-model="loginForm.username" class="input" type="text" placeholder="请输入账号" maxlength="30" />
      </view>
      <view class="input-item flex align-center">
        <view class="iconfont icon-password icon"></view>
        <input v-model="loginForm.password" type="password" class="input" placeholder="请输入密码" maxlength="20" />
      </view>
      <view class="input-item flex align-center" style="width: 60%;margin: 0px;" v-if="captchaEnabled">
        <view class="iconfont icon-code icon"></view>
        <input v-model="loginForm.code" type="number" class="input" placeholder="请输入验证码" maxlength="4" />
        <view class="login-code">
          <image :src="codeUrl" @click="getCode" class="login-code-img"></image>
        </view>
      </view>
      <view class="action-btn">
        <button @click="handleLogin" class="login-btn cu-btn block bg-blue lg round">登录</button>
      </view>
      <view class="reg text-center" v-if="register">
        <text class="text-grey1">没有账号？</text>
        <text @click="handleUserRegister" class="text-blue">立即注册</text>
      </view>
    </view>

  </view>
</template>

<script>
import {
  getCodeImg,listTenant
} from '@/api/login'

export default {
  data() {
    return {
      codeUrl: "",
      captchaEnabled: true,
      // 用户注册开关
      register: false,
      globalConfig: getApp().globalData.config,
      tenantList:[],
      isShow:false,
      loginForm: {
        appid: getApp().globalData.config.appid,
        clientId: getApp().globalData.config.clientId,
        grantType: getApp().globalData.config.grantType,
        tenantId: '',
        username: "",
        password: "",
        code: "",
        uuid: '',
        xcxCode:''
      }
    }
  },
  created() {
    this.getCode()
    this.listTenant()
    // 可选：提前尝试获取小程序 code，避免在用户点击登录时再等待（code 有效期约 5 分钟）
    // this.getXcxCode()
  },
  methods: {
    // 获取小程序登录 code（xcxCode）。有效期约 5 分钟，后端使用此 code 换取 openid/session_key
    getXcxCode() {
      return new Promise((resolve) => {
        // uni.login 在不同平台下封装了 wx.login
        uni.login({
          success: (res) => {
            if (res && res.code) {
              this.loginForm.xcxCode = res.code
              resolve(res.code)
            } else {
              // 没拿到 code 也要继续（后端可能允许空），但记录以便排查
              console.warn('getXcxCode: no code returned', res)
              resolve(null)
            }
          },
          fail: (err) => {
            console.warn('getXcxCode failed', err)
            resolve(null)
          }
        })
      })
    },
    change(){

    },
    // 用户注册
    handleUserRegister() {
      this.$tab.redirectTo(`/pages/register`)
    },
    // 隐私协议
    handlePrivacy() {
      let site = this.globalConfig.appInfo.agreements[0]
      this.$tab.navigateTo(`/pages/common/webview/index?title=${site.title}&url=${site.url}`)
    },
    // 用户协议
    handleUserAgrement() {
      let site = this.globalConfig.appInfo.agreements[1]
      this.$tab.navigateTo(`/pages/common/webview/index?title=${site.title}&url=${site.url}`)
    },
    listTenant() {
      listTenant().then(res => {
        if(res.code===200){
          //解析后台返回的data数据 res.data.tenantEnabled
          this.tenantList=res.data.voList
          if(res.data.voList.length>0){
            this.isShow=true
            this.loginForm.tenantId=this.tenantList[0].tenantId
            let list=res.data.voList
            for (var i = 0; i < list.length; i++) {
              this.tenantList[i].value=list[i].tenantId
              this.tenantList[i].text=list[i].companyName
            }

          }
        }

      })
    },
    // 获取图形验证码
    getCode() {
      getCodeImg().then(res => {
        //解析后台返回的data数据
        res = res.data
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled
        if (this.captchaEnabled) {
          this.codeUrl = 'data:image/gif;base64,' + res.img
          this.loginForm.uuid = res.uuid
        }
      })
    },
    // 登录方法
    async handleLogin() {
      if (this.loginForm.username === "") {
        this.$modal.msgError("请输入您的账号")
      } else if (this.loginForm.password === "") {
        this.$modal.msgError("请输入您的密码")
      } else if (this.loginForm.code === "" && this.captchaEnabled) {
        this.$modal.msgError("请输入验证码")
      } else {
        this.$modal.loading("登录中，请耐心等待...")
        this.pwdLogin()
      }
    },
    // 密码登录
    async pwdLogin() {
      // 在调用后端登录前，确保尝试获取小程序登录凭证（xcxCode）
      try {
        // 如果已经存在且非空，则 getXcxCode 会立即 resolve
        await this.getXcxCode()
        await this.$store.dispatch('Login', this.loginForm)
        this.$modal.closeLoading()
        this.loginSuccess()
      } catch (err) {
        if (this.captchaEnabled) {
          this.getCode()
        }
        // 继续将错误向上处理（例如界面提示）
        throw err
      }
    },
    // 登录成功后，处理函数
    loginSuccess(result) {
      // 设置用户信息
      this.$store.dispatch('GetInfo').then(res => {
        this.$tab.reLaunch('/pages/index')
      })
    }
  }
}
</script>

<style lang="scss">
page {
  background-color: #ffffff;
}

.normal-login-container {
  width: 100%;

  .logo-content {
    width: 100%;
    font-size: 21px;
    text-align: center;
    padding-top: 15%;

    image {
      border-radius: 4px;
    }

    .title {
      margin-left: 10px;
    }
  }

  .login-form-content {
    text-align: center;
    margin: 20px auto;
    margin-top: 15%;
    width: 80%;

    .input-item {
      margin: 20px auto;
      background-color: #f5f6f7;
      height: 45px;
      border-radius: 20px;

      .icon {
        font-size: 38rpx;
        margin-left: 10px;
        color: #999;
      }

      .input {
        width: 100%;
        font-size: 14px;
        line-height: 20px;
        text-align: left;
        padding-left: 15px;
      }

    }

    .login-btn {
      margin-top: 40px;
      height: 45px;
    }

    .reg {
      margin-top: 15px;
    }

    .xieyi {
      color: #333;
      margin-top: 20px;
    }

    .login-code {
      height: 38px;
      float: right;

      .login-code-img {
        height: 38px;
        position: absolute;
        margin-left: 10px;
        width: 200rpx;
      }
    }
  }
}
</style>